I just got my C4 in red too. I can´t believe how much volume this little box gives. And have only coupled it to a little Eden wtx 264 giving arround 150w at 8ohms. Impressed.
I have a PJB 4B cab that I run with C4 everyone always notices and compliments the bass sound, they say the same thing about hearing the bass clearly, Its really is a different bass experience especially in a band situation and best of all they are feather light at 2am..Phils latest video PJB factory tours give you a idea of the scale and level of the quality R&D that has gone into this line..more new stuff always coming from Phil... {}
{} I recently aquired this 4 ohm Acme Low B cab a completely different take on bass amplification speaker technology than PJB different in very pleasing way....